openssl/doc/ssl/SSL_CTX_free.pod
Lutz Jänicke 423b1a840c Add warning about unwanted side effect when calling SSL_CTX_free():
sessions in the external session cache might be removed.
Submitted by: "Nadav Har'El" <nyh@math.technion.ac.il>

PR: 547
2003-03-27 22:04:05 +00:00

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=pod
=head1 NAME
SSL_CTX_free - free an allocated SSL_CTX object
=head1 SYNOPSIS
#include <openssl/ssl.h>
void SSL_CTX_free(SSL_CTX *ctx);
=head1 DESCRIPTION
SSL_CTX_free() decrements the reference count of B<ctx>, and removes the
SSL_CTX object pointed to by B<ctx> and frees up the allocated memory if the
the reference count has reached 0.
It also calls the free()ing procedures for indirectly affected items, if
applicable: the session cache, the list of ciphers, the list of Client CAs,
the certificates and keys.
=head1 WARNINGS
If a session-remove callback is set (SSL_CTX_sess_set_remove_cb()), this
callback will be called for each session being freed from B<ctx>'s
session cache. This implies, that all corresponding sessions from an
external session cache are removed as well. If this is not desired, the user
should explicitly unset the callback by calling
SSL_CTX_sess_set_remove_cb(B<ctx>, NULL) prior to calling SSL_CTX_free().
=head1 RETURN VALUES
SSL_CTX_free() does not provide diagnostic information.
=head1 SEE ALSO
L<SSL_CTX_new(3)|SSL_CTX_new(3)>, L<ssl(3)|ssl(3)>,
L<SSL_CTX_sess_set_get_cb(3)|SSL_CTX_sess_set_get_cb(3)>
=cut